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PT Bank Commonwealth (PTBC), the Indonesian subsidiary of the Commonwealth Bank of Australia (CBA), has announced that it has suffered a major cyber incident.
The hacker who claims to be behind the attack has said that they have extracted the data of 162 million users.
According to an announcement from CBA on behalf of PTBC, the cyber attack occurred when hackers gained “unauthorised access to a web-based software application used for project management”.
Despite the attack, “PT Bank Commonwealth services continue to operate as normal”.
CBA has said that while PTBC is its Indonesian subsidiary, its own systems are separate from those accessed by hackers.
“Commonwealth Bank of Australia’s systems are segregated from PTBC’s systems,” it said.
“We are working closely with PTBC and supporting their efforts in this matter.”
The Commonwealth Bank of Australia has been contacted for comment on the issue.